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[Issue #22] Add EventBroadcaster metrics #49

Merged
HugoNijhuis merged 1 commits from issue-22-eventbroadcaster-metrics into main 2026-01-10 18:52:33 +00:00
Conversation 2 Commits 1 Files Changed 7 +782 -11

1 Commits

Author SHA1 Message Date
Hugo Nijhuis
dae751a6ef Add EventBroadcaster metrics for observability and debugging
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Details 
- Add BroadcasterMetrics interface for reading metrics per namespace
- Add MetricsCollector interface and DefaultMetricsCollector implementation
- Track events_published and events_received counters per namespace
- Track active_subscriptions gauge per namespace
- Track publish_errors, subscribe_errors, and dropped_events counters
- Add MetricsProvider interface for EventBroadcaster implementations
- Integrate metrics tracking into EventBus and NATSEventBus
- Add optional Prometheus integration via PrometheusMetricsAdapter
- Add comprehensive unit tests for metrics functionality

Closes #22

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
 2026-01-10 19:51:23 +01:00